Arm anchor



FIG. 1 is a perspective view of an arm anchor according to the present invention;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a back view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a cross section view thereof along the line 8-8 of FIG. 6.

The broken lines shown in the drawings illustrate unclaimed portions of the arm anchor and form no part of the claimed design. 

The ornamental design of an arm anchor, as shown and described. 